FILES:
 * run.sh - shell script executing the testcase
 * session.litenc.py - python script connecting to the started netconfd server and generate sequence of actions to force the tested notifications to be sent.
 * startup-cfg.xml - initial configuration

PURPOSE:
 Verify ietf-netconf-notifications (RFC6470) implementation

OPERATION:
 * Open session and <create-subscription>
 * Open additional session and verify <netconf-session-start> is sent with correct paramenters.
 * Close the additional session and verify <netconf-session-end> is sent with correct parameters.
 * Make change to the configuration and verify <netconf-configuration-change> is sent with correct parameters.
 * Make change to the configuration with confirmed commit and verify <netconf-confirmed-commit> notification is sent when the timeout elapses and the old configuration is restored.
 * Load new module and verify <netconf-capability-change> is sent with correct parameters.
